A technique that uses a wire loop as a medium for data communication is described. Signal in the loop is in the form of current. Communication circuits transmit or receive signal by using current transformers for coupling current signal in the loop. The circuit uses inductors and capacitors with formulae for maximizing signal at the carrier frequency. An important application of this technique ...

Establishing hidden communication is an important subject of discussion that has gained increasing importance nowadays with the development of the internet. One of the key methods for establishing hidden communication is steganography. Modern day steganography mainly deals with hiding information within files like image, text, html, binary files etc. These file contains small irrelevant informa...

Researching on the relationships among different multiple weighted type fractional Fourier transform (multi-WFRFT) schemes, we in this paper provide the modulation order relation of different multi-WFRFT in theory. Moreover, we also prove that the two matrix spaces (i.e., 4-WFRFT and multi-WFRFT) are equivalent. To apply multi-WFRFT into the wireless communication, we design the implementation ...

As we know in today world communication is increasing exponentially. We want best quality of service at economical cost and at high speed. When we look in deep how these parameters can be carried out then lots of problem arises in front of us and one of them is PAPR. There are various technique to reduce like tone injection, OFDM is a multi carrier transmission scheme. This is used in 4 generat...

The Orthogonal Frequency Division Multiplexing (OFDM) has widely been used in broadband wireless communication due to its ability to efficiently utilize the spectrum with multicarrier communication. In this paper BER expression for π/4 DQPSK modulation has been derived from FrFT based OFDM system in the presence of carrier frequency offset (CFO) under frequency selective Rayleigh fading channel...

Steganography – the art and science of hiding information has received much attention in the recent years. It can also be defined as the study of invisible communication that usually involves communication of secret data in an appropriate carrier, e.g., image, audio, video or TCP/IP header file. Many different carrier file formats can be used, but digital images are the most popular because of ...

Link adaptation is an essential part of wireless communication in order to guarantee required QoS in dynamically varying channel by changing the transmitter parameter according to channel condition in order to utilize spectrum must efficiently. This work proposes a noble producer for link adaptation with adaptation of carrier spacing of OFDM based communication system according to the channel c...